/**app.wxss**/
.chat-container{
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top);
  padding-bottom: 15px;
}

page,
view,
text,
image,
textarea,
input,
button,
form,
navigator,
swiper,
scroll-view,
cover-view,
cover-image {
  box-sizing: border-box;
}